# contentsTransform The transformation applied to the material property’s visual contents. Animatable. ``` var contentsTransform: SCNMatrix4 { get set } ``` ## Discussion SceneKit applies this transformation to the texture coordinates provided by the geometry object the material is attached to, then uses the resulting coordinates to map the material property’s [`contents`](/documentation/SceneKit/SCNMaterialProperty/contents) across the surface of the material. (This transformation has no effect if the material property’s [`contents`](/documentation/SceneKit/SCNMaterialProperty/contents) object is a constant color.) For example, you can use this property to grow, offset, or rotate a texture relative to the surface of a material, as illustrated below.  You can animate changes to this property’s value. See [Animating SceneKit Content](/documentation/SceneKit/animating-scenekit-content). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)